15 Red loudspeakers in the Aerodynamic Park in Berlin-Adlershof broad- cast the history of the location that served as the center of German avia- tion at the beginning of the 20th century. The installation was conceived by the artist Stefan Krüskemper – the composition of the surrounding sound was carried out by the Viennese composer Karlheinz Essl, based on authentic audio material from the German Radio Archive. This CD presents an 80 minute walk through this environment and the sound from the loudspeakers interfere with the natural surrounding soundscape of the location.